Set in noughties Britain, Mouth to Mouth deals with six young adults as they enter their twenties and realise that there is more to status than a Facebook update. Each year-in-the-life episode concentrates on one character's story as their lives intertwine and sometimes collide. Small events have big effects and molehills become mountains, as each of them scrabble to find their way and discover that be it comic, tragic and unpredictable, modern life can be tough.

Living on the streets after escaping from a secure unit, Faith begs from passers-by and spends her nights in a squat with Nemo, a battle-scarred war veteran. Guided by messages from a TV doctor, she searches for Emily, the childhood friend she lost years before. As she revisits her past, identities blur, memories surface and she realises that to get Emily back she must first confront the man who took her. Show less